If you want to have a VFS in the future, than definitely don't even think about having another procedure there. If there will be anything left to remove, dr. Kim is the only one you should trust, as your VFS could be compromised by a wrong choice.
Just a question out of curiosity. Why in the world did you choose to have a trachea shave with this doctor? The incision for trachea shave must be done under the chin, not right above the Adams apple. Every capable FFS surgeon does it this way, to avoid the visable scar and the possibility of being outed because of that.